Table 1 Demographics and risk behavior characteristics of female sex workers servicing truck drivers in Mexico
DEMOGRAPHICS | Total, No. (%), n=200 | No STI symptoms, n=167 | STI symptoms, n=33 | p-value |
|---|---|---|---|---|
Age median years (IQR) | 28.7 (22.8, 35.1) | 28.8 (22.4, 35.1) | 28.4 (24.7, 35.1) | 0.43 |
Civil status: | Â | Â | Â | Â |
 Married/common-law | 52 (26.0%) | 45 (26.9%) 122 | 7 (21.2%) 26 | 0.49 |
 Single/divorced/separated/widow | 148 (74.0%) | (73.1%) | (78.8%) |  |
Education: | Â | Â | Â | Â |
 >9th grade (preparatoria) | 27 (13.5%) | 21 (12.6%) | 6(18.2%) | 0.39 |
 <9th grade (secundaria) | 173 (86.5%) | 146 (87.4%) | 27 (81.8%) |  |
Income: Monthly in thousand pesos (median, IQR) | 4.0 (2.0, 10.0) | 4.0 (2.0, 10.0) | 5.3 (2.5, 12.0) | 0.28 |
Site | Â | Â | Â | Â |
 Nuevo Laredo | 100 (50%) | 74 (44.3%) | 26 (78.8%) | <0.001 |
 Ciudad Hidalgo | 100 (50%) | 93 (55.7%) | 7 (21.2%) |  |
MIGRATION FACTORS | Â | Â | Â | Â |
Birthplace: | Â | Â | Â | Â |
 Mexico | 113 (56.5%) | 87 (52.1%) | 26 (78.8%) | 0.005 |
 Other Central American country | 87 (43.5%) | 80 (47.9%) | 7 (21.2%) |  |
Length of time in current city: | Â | Â | Â | Â |
 > 5 years | 101 (50.8%) | 80 (48.2%) | 21 (63.6%) | 0.11 |
 < 5 years | 98 (49.2%) | 86 (51.8%) | 12 (36.4%) |  |
Ever been deported (vs. never deported) | 32 (16.0%) | 26 (15.6%) | 6 (18.2%) | 0.71 a |
HEALTHCARE ACCESS | Â | Â | Â | Â |
Health insurance, last 6 months | Â | Â | Â | Â |
 No | 40 (20.0%) | 30 (18.0%) | 10 (30.3%) | 0.11 |
 Yes | 160 (80.0%) | 137 (82.0%) | 23 (69.7%) |  |
# Gynecologic visits, last | Â | Â | Â | Â |
 year(n=182) | 14 (7.8%) | 14 (9.1%) | 0 | 0.090 |
 0 >1 | 168 (92.3%) | 139 (90.9%) | 29 (100.0%) |  |
Ever tested for HIV | Â | Â | Â | Â |
 No | 51 (25.5%) | 44 (26.3%) | 7 (21.2%) | 0.54 |
 Yes | 149 (74.5%) | 123 (73.7%) | 26 (78.8%) |  |
SUBSTANCE USE AND INCARCERATION | Â | Â | Â | Â |
Heavy alcohol use: Has (n=174) | Â | Â | Â | Â |
 1-4 drinks on typical drinking day | 30 (17.2%) | 27 (18.2%) | 3 (11.5%) | 0.40 |
 >4 drinks on typical drinking day | 144 (82.8%) | 121 (81.8%) | 23 (88.5%) |  |
Frequency of alcohol use (n=189) | Â | Â | Â | Â |
 Never-1x/week | 58 (30.7%) | 53 (33.3%) | 5 (16.7%) | 0.069 |
 Several times/week- daily | 131 (69.3%) | 106 (66.7%) | 25 (83.3%) |  |
Lifetime drug use: b | Â | Â | Â | Â |
 Illicit drug usec | 105 (52.5%) | 81 (48.5%) | 24 (72.7%) | 0.011 |
 Marijuana use | 66 (33.2%) | 55 (33.1%) | 11 (33.3%) | 0.98 |
 Cocaine use | 79 (39.5%) | 62 (37.1%) | 17 (51.5%) | 0.12 |
 Heroin use (n=199) | 9 (4.5%) | 5 (3.0%) | 4 (12.1%) | 0.021 |
 Methamphetamine use | 3 (1.5%) | 2 (1.2%) | 1 (3.0%) | 0.43 |
 Amphetamine use (n=197) | 11 (5.6%) | 8 (4.9%) | 3 (9.1%) | 0.34 |
 Injection drug use (n=106) | 7 (6.6%) | 4 (4.9%) | 3 (12.5%) | 0.19 |
Drug use in the last 6 months: b | Â | Â | Â | Â |
 Marijuana | 25 (12.5%) | 21 (12.6%) | 4 (12.1%) | 0.94 |
 Cocaine | 42 (21.0%) | 33 (19.8%) | 9 (27.8%) | 0.33 |
 Heroin | 4 (2.0%) | 3 (1.8%) | 1 (3.0%) | 0.64 |
 Amphetamines | 7 (3.5%) | 5 (3.0%) | 2 (6.1%) | 0.38 |
Ever arrested (n=199) | Â | Â | Â | Â |
 No | 142 (71.4%) | 124 (74.7%) | 18 (54.6%) | 0.019 |
 Yes | 57 (28.6%) | 42 (25.3%) | 15 (45.5%) |  |
Arrested in the last year | Â | Â | Â | Â |
 No | 167 (83.5%) | 143 (85.7%) | 24 (72.7%) | 0.068 |
 Yes | 33 (16.5%) | 24 (14.4%) | 9 (27.3%) |  |
SEXUAL BEHAVIORS AND PRACTICES | Â | Â | Â | Â |
Ever diagnosed with an STI d | Â | Â | Â | Â |
 No | 172 (86.0%) | 149 (89.2%) | 23 (69.7%) | 0.003 |
 Yes | 28 (14.0%) | 18 (10.8%) | 10 (30.3%) |  |
Number of years worked as sex worker (median, IQR) | 4.90 (1.80, 18.0) | 4.52 (1.78, 17.8) | 7.07 (3.39, 23.3) | 0.076 |
Number of clients, last 6 mo. (median, IQR) (n=196) | 35 (10, 100) | 30 (10,100) | 50 (16.5, 174) | 0.32 |
Free condom availability | Â | Â | Â | Â |
 Never receives free condoms | 80 (40.0%) | 72 (43.1%) | 8 (24.2%) | 0.043 |
 Receives sometimes/always | 120 (60.0%) | 95 (56.9%) | 25 (75.8%) |  |
Can you afford to buy own condoms? | Â | Â | Â | Â |
 No | 21 (10.5%) | 15 (9.0%) | 6 (18.2%) | 0.11 |
 Yes | 179 (89.5%) | 152 (91.0%) | 27 (81.8%) |  |
Main place of sex work | Â | Â | Â | Â |
 Bar/cantina | 140 (70.0%) | 119 (71.2%) | 21 (63.6%) | 0.42 |
 Other | 60 (30%) | 48 (28.8%) | 12 (36.4%) |  |
Has a manager/pimp | Â | Â | Â | Â |
 No | 153 (76.5%) | 124 (74.2%) | 29 (87.9%) | 0.092 |
 Yes | 47 (23.5%) | 43 (25.8%) | 4 (12.1%) |  |
Alcohol before/during sex work, last mo. (n=199) | Â | Â | Â | Â |
 Never/sometimes/50% of the time | 156 (78.4%) | 138 (83.1%) | 18 (54.5%) | <0.001 |
 Often/always | 43 (21.6%) | 28 (16.9%) | 15 (45.5%) |  |
Used drugs before/during sex, last mo.(n=198) | Â | Â | Â | Â |
 Never | 170 (85.9%) | 148 (89.2%) | 22 (68.7%) | 0.002 |
 Sometimes/often/always | 28 (14.1%) | 18 (10.8%) | 10 (31.3%) |  |
U.S. clients, past 6 months | Â | Â | Â | Â |
 No | 138 (69.0%) | 124 (74.2%) | 14 (42.4%) | <0.001 |
 Yes | 62 (31.0%) | 43 (25.8%) | 19 (57.6%) |  |
Has ever been forced to have sex (n=199) | Â | Â | Â | Â |
 No | 161 (80.9%) | 139 (83.7%) | 22 (66.7%) | 0.02 |
 Yes | 38 (19.1%) | 27 (16.3%) | 11 (33.3%) |  |
Age median years (IQR) | 28.7 (22.8, 35.1) | 28.8 (22.4, 35.1) | 28.4 (24.7, 35.1) | 0.43 |